International route
Cheap flights from Seattle to Singapore
Seattle-Tacoma International Airport (SEA) to Singapore Changi Airport (SIN). 8,064 miles, 16h 35m nonstop.
SEA to SIN at a glance
Computed from airline schedules and the fares we track for this route. Refreshed several times a day.
- Distance
- 8,064 milesgreat-circle
- Typical flight time
- 16h 35mnonstop, gate to gate
- Nonstop airlines
- ASSQ2 airlinesAlaska, Singapore
- Nonstop flights per day
- 2all airlines combined
- Cheapest month
- January 2027over the next six months
- Best day to fly
- Wednesday20% less than Sunday
- Time difference
- 15h aheadSingapore vs Seattle
Seattle to Singapore
Round trips from $654
Per traveler, taxes and fees included. Lowest fare we found departs Wed, Jan 6.
Cheapest month: January 2027
See fares on these datesLock any fare free — pay only when you accept your last-minute deal
Or ask an agent on WhatsAppSeattle to Singapore fares by month
Lowest round-trip economy fare per traveler in each of the next six months, taxes and fees included. Select a month to search that date.
Airlines flying Seattle to Singapore
2 airlines fly nonstop with 2 departures a day combined, plus 21 more with one stop.
- ASAlaska AirlinesoneworldNonstop · 1 flight a day · first checked bag from $35
- SQSingapore AirlinesStar AllianceNonstop · 1 flight a day · first checked bag included
- EIAer LingusConnecting via DUB · first checked bag from $70
- ACAir CanadaStar AllianceConnecting via YVR, YYC · first checked bag from $35
- AIAir IndiaStar AllianceConnecting via BOM · first checked bag included
- NHANA All Nippon AirwaysStar AllianceConnecting via HND, NRT · first checked bag included
- OZAsiana AirlinesStar AllianceConnecting via ICN · first checked bag included
- BABritish AirwaysoneworldConnecting via LHR · first checked bag from $75
- CXCathay PacificoneworldConnecting via HKG · first checked bag included
- CIChina AirlinesSkyTeamConnecting via TPE · first checked bag included
- BREVA AirStar AllianceConnecting via TPE · first checked bag included
- JLJapan AirlinesoneworldConnecting via HND, NRT, KIX · first checked bag included
- KLKLM Royal Dutch AirlinesSkyTeamConnecting via AMS · first checked bag from $75
- KEKorean AirSkyTeamConnecting via ICN · first checked bag included
- LHLufthansaStar AllianceConnecting via MUC · first checked bag from $75
- NONorse Atlantic AirwaysLow-costConnecting via OSL · first checked bag from $80
- QFQantasoneworldConnecting via SYD · first checked bag included
- SKSAS Scandinavian AirlinesSkyTeamConnecting via CPH, ARN, OSL · first checked bag from $70
- LXSWISSStar AllianceConnecting via ZRH · first checked bag from $75
- TPTAP Air PortugalStar AllianceConnecting via OPO · first checked bag from $70
- TKTurkish AirlinesStar AllianceConnecting via IST · first checked bag from $70
- VSVirgin AtlanticSkyTeamConnecting via MAN · first checked bag from $75
- Y4VolarisLow-costConnecting via TIJ · first checked bag from $45
Connecting options
Hubs where one airline can carry you on both legs, most choices first.
- Oslo (OSL)SKNO2 airlines
- Tokyo (HND)JLNH2 airlines
- Tokyo (NRT)JLNH2 airlines
- Seoul (ICN)KEOZ2 airlines
- Taipei (TPE)BRCI2 airlines
Tips for this route
- Only Alaska and Singapore fly this route nonstop, which keeps nonstop fares firm. A one-stop itinerary through OSL or HND is usually cheaper if you can spare the extra three to five hours.
- January 2027 is the cheapest month to fly over the next six months, with round trips from $654; September 2026 is the most expensive at $949 and up, a difference of $295 per traveler.
- Departing on a Wednesday averages 20% less than a Sunday on this route. If your dates are flexible, shift the outbound by a day or two and check the calendar view before you book.
- Book 2 to 5 months ahead for the best fares; long-haul seats sell out earliest for summer and holiday travel.
- Singapore is 15 hours ahead of Seattle. Expect to lose 15 hours on the clock heading east, so an overnight or late-afternoon departure tends to arrive at a more usable hour.
Ready to compare live fares?
See every airline on SEA–SIN side by side with bags and seat rules spelled out.
Search Seattle to SingaporeSeattle to Singapore: common questions
How long is the flight from Seattle to Singapore?
A nonstop flight from Seattle (SEA) to Singapore (SIN) takes about 16h 35m gate to gate, covering 8,064 miles. Connecting itineraries add the layover, typically 2 to 5 hours more in total.
Which airlines fly nonstop from SEA to SIN?
Alaska Airlines and Singapore Airlines operate nonstop flights from Seattle (SEA) to Singapore (SIN), with 2 nonstop departures a day between them. One-stop options connect through OSL, HND and NRT.
What is the cheapest month to fly from Seattle to Singapore?
Over the next six months, January 2027 has the lowest round-trip fares from Seattle (SEA) to Singapore (SIN), starting at $654 per traveler including taxes and fees. Within any month, Wednesday departures average the lowest prices.
How far in advance should I book Seattle to Singapore flights?
Book 2 to 5 months ahead for the best fares; long-haul seats sell out earliest for summer and holiday travel. Air1 Tickets includes free cancellation within 24 hours of booking on every fare, so you can lock in a good price and keep looking.
What is the time difference between Seattle and Singapore?
Singapore is 15 hours ahead of Seattle. SEA is on America/Los Angeles time and SIN on Asia/Singapore time. Departure and arrival times in search results are always shown in local time at each airport.
Related routes
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